. >> america is concerned about pakistan. following their success in the osama bin laden operation, people are wanting to the ideas of stopping the terrorists in their tracks. >> pakistan might prove to be the major challenge in the so- called war on terror. the rising confidence of extremist groups is making observers extremely nervous, especially as the country is home to what the jihadists like to call the islamic bomb. the last time the world was jittery about security in pakistan was nearly a decade ago just after the 9/11 attacks when washington developed an emergency plans. we have been told that these plans are coming once again and they are contemplating the country expanding their nuclear arsenal at a time of weakness. these are the images behind the latest attack of nerves, a naval base in karachi. they destroyed two u.s.-made spy planes in a well-executed operation which is believed to have received support from elements within the armed forces. >> the raid on that particular naval facility was unique in this sens